Thermodynamics Research Center / ThermoML | Fluid Phase Equilibria

ABSTRACT

Isothermal vapor-liquid equilibria (VLE) of the binary mixture of furfural + methyl isobutyl ketone (MIBK), furfural + 2-butanol and furfural + 2-methyl-2-butanol were measured at 333, 346 and 353 K with three equipment: a static total pressure apparatus, a recirculation still apparatus and a gas chromatograph connected to a headspace sampler (HS-GC). Excess molar enthalpy was measured for the three binary mixtures at 298.15 K by using SETARAM C80 calorimeter equipped with a flow mixing cell. Gas chromatography-mass spectrometry was employed for analysis of the furfural impurities. A comprehensive consistency analysis was performed for the obtained data. The experimental data are correlated with the NRTL, the UNIQUAC and the Wilson activity coefficient models. The results are compared with the UNIFAC-Dortmund and the COSMO-RS predictive models. All investigated mixtures show positive deviation from Raoult's law.